Complete any campaign.

Earn the Knight's Cross with Golden Oak Leaves, Crossed Swords, and Diamonds with any officer.

Complete all stages of the campaign objective The Black Pit.

Have a budget of over 1,000,000.

Complete all stages of the campaign objective The Last Stand.

Complete all stages of the campaign objective The Happy Time.

Complete all stages of the campaign objective Battle of the Mediterranean

Cause a tanker to explode while enemy warships are nearby.

Sink 30 destroyers.

Complete any campaign objective with mine-laying.

Complete the mission of crossing the Strait of Gibraltar.

Sink a cargo ship requested for sinking by command, which is sailing in a convoy of at least 15 ships, without sinking any other ship in the convoy beforehand.

Earn the Knight's Cross with Oak Leaves with any officer.

Earn the Knight's Cross with any officer.

Single-handedly sink an entire convoy consisting of at least 10 ships.

Build all U-boat bunkers in a campaign started before March 1941.

Complete all stages of the campaign objective Southern Routes.

Sink a total of 3 aircraft carriers travelling in convoys.

Complete any campaign with realism settings over 90%.

Sink an enemy ship by ramming it.

Complete all stages of the Norwegian campaign.

Meet a Japanese B1-type submarine.

Earn the Iron Cross 1st Class with any officer.

Earn the Knight's Cross with Oak Leaves, Crossed Swords, and Diamonds with any officer.

Sink an enemy battleship moving with a convoy or a warship task force.

Complete all stages of the campaign objective Tonnage War.

Complete all stages of the campaign objective Operation Drumbeat.

Surface for fresh air after your U-boat has sunk to a depth of at least 100 meters with a displacement of -10% or less.

Complete the mission of rescuing a Kriegsmarine officer from an interned ship.

Shoot down 20 airplanes.

Complete the mission of attacking Aruba.

Complete the mission of retrieving the Enigma from a sunken U-boat.

Complete the mission of retrieving gold from a sunken merchant ship.

Sink at least 40000 GRT during a single patrol.

Sink at least 86700 GRT during a single patrol, breaking the historical record set by U-107.

Complete the mission of establishing a weather station in Northern Labrador.

Complete all stages of the campaign objective Arctic Convoys.

Survive a battle during which enemy ships dropped over 100 depth charges on your U-boat.

Research all technologies available in the game during a campaign started on September 1, 1939.

Have 10 reputation points.

Complete the mission of infiltrating Scapa Flow.

Transport a spy to enemy territory.

Sink at least 15000 GRT during a single patrol.

Earn the Knight's Cross with Oak Leaves and Crossed Swords with any officer.

Earn the German Cross in Gold with any officer.

After the war, sink your ship off the coast of Argentina.

Earn the Iron Cross 2nd Class with any officer.

Sink an enemy warship using the deck gun or AA gun.

Complete any campaign starting on September 1, 1939.

Give bags of potatoes to the shipwrecked on a lifeboat.

Hit three different ships with torpedoes with a maximum of 120 seconds between the first and last hit.